Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"luong chat tre snippets" » "luong cac tre snippets", "luong cua tre snippets", "luong ha tre snippets", "luong chay tren snippets", "luong chat tai snippets", "luong cho tre snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("luong chat tre snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("luong chat tre snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( luong chat tre snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("luong chat tre snippets"))) or ("locating bug code snippets"))*.